Comtech EF Data CDM-570A Installation And Operation Manual page 572

CDM-570A/570AL Satellite Modem with Optional Packet Processor
Revision 5
Figure G-3. Same Link Using CDM-570A with DoubleTalk Carrier-in-Carrier
Figure G-4. Duplex Link Optimization
The CDM-570A/AL CnC module operates on the near-zero signal before the demodulator, and is
waveform agnostic. This means that no prior knowledge of the underlying modulation, FEC, or
any other waveform specific parameter is required in order to perform the signal suppression
operation. The only caveat to this is that the waveform must be sufficiently random.
DoubleTalk Carrier-in-Carrier Option G–6 MN-CDM570A